package com.sky.service.impl;

import cn.hutool.core.bean.BeanUtil;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.AddEmployeeDto;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.UpdateEmployeeDto;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.BaseException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.Objects;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    @Override
    public void updateEmployee(UpdateEmployeeDto dto) {
        Employee byUsername = employeeMapper.getByUsername(dto.getUsername());
        if (byUsername!=null&&!Objects.equals(byUsername.getId(),dto.getId())){
            throw new AccountNotFoundException(MessageConstant.USERS_ARE_NOT_UNIQUE+dto.getUsername());
        }
        Employee byIdNumber =employeeMapper.getEmoloyeeByIdNumber(dto.getIdNumber());
        if (byIdNumber!=null&&!Objects.equals(byIdNumber.getId(),dto.getId())){
            throw new AccountNotFoundException(MessageConstant.USERS_IDNUMBER_NOT_UNIQUE+dto.getIdNumber());
        }
        Employee employee = BeanUtil.copyProperties(dto, Employee.class);
//        employee.setUpdateUser(BaseContext.getCurrentId());
//        employee.setUpdateTime(LocalDateTime.now());
        employeeMapper.updateEmoloyeeById(employee);
    }

    @Override
    public Employee getEmoloyeeById(Long id) {
      return employeeMapper.getEmoloyeeById(id);
    }

    @Override
    public void statusEmployee(String status, Long id) {
        Employee employee = new Employee();
        employee.setStatus(Integer.valueOf(status));
        employee.setId(id);
        employeeMapper.updateEmoloyeeById(employee);
    }

    @Override
    public PageResult page(EmployeePageQueryDTO dto) {
        PageHelper.startPage(dto.getPage(),dto.getPageSize());
        Page<Employee> page= employeeMapper.page(dto);
        return new PageResult(page.getTotal(),page.getResult());
    }
    @Override
    public void addEmployee(AddEmployeeDto dto) {
        String phone = dto.getPhone();
        Employee employee= employeeMapper.getByUsername(dto.getUsername());
        if (employee != null) {
            throw new BaseException(MessageConstant.USERS_ARE_NOT_UNIQUE+dto.getUsername());
        }
        if (phone.length()!=11){
            throw new BaseException(MessageConstant.PHONE_LENGTH_UNLAWFUL);
        }
        if (dto.getIdNumber().length()!=18){
            throw new BaseException(MessageConstant.IDCARD_LENGTH_UNLAWFUL);
        }
        employee = BeanUtil.copyProperties(dto, Employee.class);
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employee.setStatus(StatusConstant.ENABLE);
        employeeMapper.addEmployee(employee);
    }

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
         password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

}
